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金属矿山 ›› 2009, Vol. 39 ›› Issue (11): 57-59+63.

• 矿物工程 • 上一篇    下一篇

甘肃某微细粒混合铁矿石开发利用研究

崔建辉,刘金长,秦彩霞   

  1. 酒泉钢铁集团有限责任公司选烧厂
  • 出版日期:2009-11-16 发布日期:2011-04-26

Research on Development and Utilization of A Micro-fine Grained Mixture Iron Ore in Gansu

Cui Jianhui,Liu Jinchang,Qin Caixia   

  1. Beneficiating-Sintering Plant, Jiuquan Iron & Steel Group Co., Ltd.
  • Online:2009-11-16 Published:2011-04-26

摘要: 甘肃某矿山所产铁矿石矿物组成复杂,主要铁矿物为磁铁矿、赤铁矿和菱铁矿,含量基本相近,其次还有少部分褐铁矿,采用单一工艺无法获得较好的选别指标。根据矿石性质特点,本次研究主要进行了弱磁选—强磁选联合流程、弱磁选—焙烧磁选及工业焙烧—磁选试验。3种方案中以工业焙烧磁选方案的选别指标相对较好,可以获得与酒钢现生产接近的选别指标,达到了利用标准。  

关键词: 微细粒混合铁矿石, 焙烧, 磁选

Abstract: The iron ores produced from a mine in Gansu have a complex mineral composition, where the main iron minerals are magnetite, hematite and siderite with basically similar content and a small amount of limonite.So a single process can not reach a good index.According to the nature of ores, such processes consisting of low intensity magnetic separation-high intensity magnetic separation, low intensity magnetic separation-magnetic separation after roasting, industrial roasting-magnetic separation were focused on.The industrial roasting-magnetic separation program got relatively good indicators among three kinds of programs, and reached the application standard of being in closely proximity to the current production in Jiuquan.

Key words: Micro-fine grained mixture iron ore, Roasting, Magnetic separation